读一读，填一填。
One duck (鸭子) has a mouth (嘴), two eyes (眼睛), two legs (腿).
Two ducks have two mouths, four eyes, four legs.
Three ducks have three mouths, six eyes, six legs.
Four ducks have _____________ mouths, _____________ eyes, _____________ legs.

参考答案：
four, eight, eight

读一读，填一填。
One duck (鸭子) has a mouth (嘴), two eyes (眼睛), two legs (腿).
Two ducks have two mouths, four eyes, four legs.
Three ducks have three mouths, six eyes, six legs.
Four ducks have _____________ mouths, _____________ eyes, _____________ legs.

参考答案：
four, eight, eight